RT Journal Article
T1 A novel wavelength dispersive device with a dispersive element based on staircase-like straight and parallel arrayed waveguides
A1 Martínez Matos, Óscar
A1 Calvo Padilla, María Luisa
A1 Cheben, Pavel
A1 Rodrigo Martín-Romo, José Augusto
A1 Janz, Siegfried
A1 Xu, Dan-Xia
A1 Delâge, André
AB We propose a new type of arrayed waveguide grating (AWG) multiplexer/demultiplexer based on modified group refractive index. This device is composed by an array of straight and parallel waveguides of equal length and each waveguide consist of two sections with different width. The length of the two sections are changed from a waveguide to the adjacent one following a linear dependence resulting in a wavelength dispersive waveguide array. An example of the device design for silicon-on-insulator (Sol) platform is provided and numerical simulations have been carried out for various arrayed waveguide parameters. We demonstrate that the group index modification can be used for tailoring device dispersion properties, and that it can also result in new dispersion characteristics predicted numerically not observed in conventional AWGs. Additional advantages are that the demultiplexer does not necessarily require bending waveguide sections as in a conventional AWG (de)multiplexers, and thus yields highly compact devices with potentially very low insertion loss. Channel spacing of I nm have been predicted for sub-micron waveguides sizes. In this paper it is also proposed a novel wavefront converter based on waveguide array lens-like element with waveguides broadened sections. Numerical results for different input/output geometries are analized.
PB Elsevier Science BV
SN 0030-4018
YR 2007
FD 2007-02-01
LK https://hdl.handle.net/20.500.14352/51021
UL https://hdl.handle.net/20.500.14352/51021
LA eng
NO © 2006 Elsevier B.V.The financial supports from the Spanish Ministry of Science and Technology under Project TIC2002-1846 and from the National Research Council of Canada are acknowledged. Partial results were presented at the V Ibero-American Optics Meeting (RIAO) and VIII OPTILAS, October 2–8, 2004, Porlamar (Venezuela).
NO Ministerio de Ciencia y Tecnología, España
NO National Research Council of Canada
DS Docta Complutense
RD 10 abr 2025